Communication Technology
{"Image DocumentName": "Communication Technology", "Image ImageDescription": "In the early 1800\u2019s communication required the transportation of people or paper. In 1837, Samuel Morse demonstrated a new device called the telegraph, that could send messages by way of an electric current. By the 1860\u2019s telegraphs were in use in every major city. They helped people and businesses communicate more quickly and more efficiently. In 1876 a new invention called the telephone was introduced in Philadelphia. By 1915, telephone wires connected people from coast to coast. Today fiber optics is replacing the use of telephone wires. This allows for the conversion of electronic signals into light waves. People can now communicate at the speed of light. Other forms of telecommunication include the use of satellites, computer networks, and the internet.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}